117大厦混凝土底板温度场与应力场数值模拟  

Numerical simulation on mass concrete floor temperature field and stress field of 117 building

作　　者：李勇[1,2] 管昌生[1] 程骥[1] 都全红 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070 [2]黄淮学院建筑工程学院,河南驻马店463000

出　　处：《混凝土》2012年第8期122-124,共3页Concrete

摘　　要：根据天津117大厦塔楼D区底板C50大体积混凝土试验方案,基于混凝土水化热放热模型与计算理论,应用有限元分析软件ANSYS,对浇筑混凝土的温度场与应力场进行了数值模拟分析。分析出水化热的温度场和应力场的空间分布。计算表明:混凝土中心温度变化较大,温度应力最大值出现在大体积混凝土底部和四周与土壤交接部位,但远小于混凝土的抗拉强度设计值,不会导致温度裂缝。According to Tianjin 117 building the tower region of D C50 concrete slab test plan,based on the concrete of the hydration heat wave and the model and the calculation theory,use finite element analysis software ANSYS, research and numerical simulation analysis during the construction of concrete temperature field and stress field.The study demonstrates that concrete center temperature variation of changes greatly, The maximum temperature stress appears at the bottom of the mass concrete and around the soil handover parts, far less that the tensile stress, the temperature cracks will not be there,good analysis of the hydration heat out of the temperature field and stress field of the space distribution,can in practical projects for guiding the construction.

关 键 词：数值模拟 大体积混凝土 水化热 温度场 应力场 

分 类 号：TU528.01[建筑科学—建筑技术科学]